2007221170561 has 2 divisors, whose sum is σ = 2007221170562. Its totient is φ = 2007221170560.

The previous prime is 2007221170531. The next prime is 2007221170609. The reversal of 2007221170561 is 1650711227002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1500233025600 + 506988144961 = 1224840^2 + 712031^2 .

It is a cyclic number.

It is not a de Polignac number, because 2007221170561 - 2¹⁷ = 2007221039489 is a prime.

It is not a weakly prime, because it can be changed into another prime (2007221170501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1003610585280 + 1003610585281.

It is an arithmetic number, because the mean of its divisors is an integer number (1003610585281).

Almost surely, 2^{2007221170561} is an apocalyptic number.

It is an amenable number.

2007221170561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2007221170561 is an equidigital number, since it uses as much as digits as its factorization.

2007221170561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 34.

Adding to 2007221170561 its reverse (1650711227002), we get a palindrome (3657932397563).

The spelling of 2007221170561 in words is "two trillion, seven billion, two hundred twenty-one million, one hundred seventy thousand, five hundred sixty-one".